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authorElena Ufimtseva <elena.ufimtseva@oracle.com>2021-01-29 11:46:14 -0500
committerStefan Hajnoczi <stefanha@redhat.com>2021-02-10 09:23:28 +0000
commit9f8112073aad8e485ac012ee18809457ab7f23a6 (patch)
tree479d8d11c211ff6033d8c38280ab460bf69635e0 /include
parented5d001916dd46ceed6d8850e453bcd7b5db2acb (diff)
downloadqemu-arm-9f8112073aad8e485ac012ee18809457ab7f23a6.tar.gz
multi-process: introduce proxy object
Defines a PCI Device proxy object as a child of TYPE_PCI_DEVICE. Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John G Johnson <john.g.johnson@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: b5186ebfedf8e557044d09a768846c59230ad3a7.1611938319.git.jag.raman@oracle.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/hw/remote/proxy.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/hw/remote/proxy.h b/include/hw/remote/proxy.h
new file mode 100644
index 0000000000..faa9c4d580
--- /dev/null
+++ b/include/hw/remote/proxy.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright © 2018, 2021 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef PROXY_H
+#define PROXY_H
+
+#include "hw/pci/pci.h"
+#include "io/channel.h"
+
+#define TYPE_PCI_PROXY_DEV "x-pci-proxy-dev"
+OBJECT_DECLARE_SIMPLE_TYPE(PCIProxyDev, PCI_PROXY_DEV)
+
+struct PCIProxyDev {
+ PCIDevice parent_dev;
+ char *fd;
+
+ /*
+ * Mutex used to protect the QIOChannel fd from
+ * the concurrent access by the VCPUs since proxy
+ * blocks while awaiting for the replies from the
+ * process remote.
+ */
+ QemuMutex io_mutex;
+ QIOChannel *ioc;
+ Error *migration_blocker;
+};
+
+#endif /* PROXY_H */